The only real way to stop all action executions is to use the restart BTT action.
I think I can add a soft-stop that prevents an action sequence from progressing, but that will not necessarily stop all actions (e.g. if outsourced to a script that is already running)
What about having a variable Stop_all_next_btt_actions? Then have an action called 'Stop Next BTT actions' that when triggered updates the variable to true. BTT would check this variable in sequence triggers each time it wants to execute the next action. If it's true, it stops and then turns it to false. If it's false, it continues.
Would a lot of variable checks slow down trigger executions? This might not be the best solution, just thinking out loud. but ofc a solution that stops the executions immediately would be preferred.
The soft stop action would be super super useful, I could easily move it up and down to include or exclude specific actions from the trigger temporarily instead of disabling them.